Note that adding the form element into Ajax setting is not a valid scenario. Therefore please add the inner form controls in the Ajax settings separately but not the whole form and see how it goes.
Also please avoid opening duplicate tickets for the same issue so that we can easily track your case and provide the best solution for your issue. In case further assistance is needed I would suggest you to reply in the initial ticket you have opened for this issue ( Ticket ID: 1022291
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